JP6517372B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an elevator apparatus.

  The elevator system is generally provided with a governor which constantly monitors the elevation speed of the car and makes an emergency stop of the car when the car falls into a predetermined overspeed state. Specifically, when the speed of raising and lowering the car exceeds the rated speed and reaches a first overspeed (usually 1.3 times the rated speed), the governor is a power supply of a hoist that drives the car and this Shut off the power supply of the control device that controls the hoisting machine. Also, the speed governor should be equipped with an emergency stop device installed in the car if the descent speed of the car exceeds the first overspeed and reaches the second overspeed (usually 1.4 times the rated speed) for some reason. Operate and mechanically emergency stop the car.

  As a speed governor for an elevator, there is one described in JP-A-2-158582 (Patent Document 1).

  The following description of the governor according to Patent Document 1 will be made using terms used in the description of the embodiments according to the present invention. In order to make the correspondence between the terms used in the following description and the configuration of the governor of Patent Document 1 easy to understand, reference symbols used in Patent Document 1 are attached to the terms in parentheses and described. . These parenthesized reference symbols have nothing to do with the symbols used in the construction of the embodiment according to the present invention.

  The governor of Patent Document 1 has a sheave (2) on which a governor rope (3) connected to a car is wound, and a circumference by centrifugal force according to the rotational speed of the sheave (2) At a position where the pendulum (5, 6) expanding outward, the hook (13) engaged by the expansion of the pendulum (5, 6), and the hook (13) do not interfere with the speed control rope (3) It is supported and provided with a governor rope (catch weight (15) for gripping 3) by releasing the hook (13) by engagement of the pendulum (5, 6). The emergency stop is operated by gripping the machine rope (3) (see page 19 at the bottom left column on page 2 through line 6 on the page 3 bottom right column).

JP-A-2-158582

  In the governor of Patent Document 1, the following problems can be considered in the rope gripping mechanism consisting of a pendulum, a hook and a catch weight.

  In the rope gripping mechanism of Patent Document 1, the hook is extended upward from the center of rotation in the direction of the vertical line, and an arm (13c) engaging with the catch weight is provided on one side of the hook with respect to the vertical line. It is done. For this reason, it can be inferred that the center of gravity of the hook is on the support point of the catch weight (engagement portion between the hook and the catch weight) with respect to the vertical line passing through the rotation center of the hook. In this case, when the pendulum opens and collides with the hook, the collision force between the pendulum and the hook is small, and the rotation of the hook is small, the center of gravity of the hook can not cross the vertical line passing through the rotation center, and the hook It will return to its original position. In this case, the phenomenon that the pendulum and the hook collide unnecessarily again will be repeated.

  When the center of gravity of the hook is on the opposite side of the catch weight with respect to the vertical line passing through the rotation center, the force for the hook to rotate is greater than the force of the catch weight supporting the hook due to any vibration or impact. If it does, the support point of the catch weight may come off the hook, and the catch weight may erroneously grip the rope.

  The object of the present invention is to provide a governor capable of maintaining a posture in which the hook continues to support the catch weight before the operation of the catch weight, and a posture in which the hook does not interfere with the pendulum after the movement of the catch weight. It is in providing an elevator apparatus.

In order to achieve the above object, the elevator apparatus of the present invention is
A speed control rope connected to the elevating body,
A sheave on which the regulating rope is wound;
A pendulum that spreads radially outward of the sheave by centrifugal force according to the rotational speed of the sheave;
A catch weight for gripping the governor rope;
It is configured to be rotatable around an axis of rotation, supports the catch weight by engaging with the catch weight, and releases support of the catch weight by rotating in a first rotational direction around the axis of rotation Have hooks to
The elevator apparatus according to claim 1, wherein the pendulum spreads radially outward of the sheave to contact the hook at an emergency stop speed of the elevator to release the catch weight from the hook and to release the catch weight. ,
The center of gravity of the hook is
When the hook supports the catch weight, the hook is located on the support point side of the catch weight by the hook with respect to a vertical line passing through the rotation center of the hook.
The hook is arranged to move beyond the vertical line to the side opposite to the support point while rotating the hook in a rotational angle range that can contact the expanded pendulum at the emergency stop speed.

  According to the present invention, since the barycentric position of the hook is on the support point side of the catch weight with respect to the vertical line passing through the rotation center of the hook before the catch weight operation, the hook holds the attitude for supporting the catch weight. Can. For this reason, it is possible to reduce the risk of the catch weight malfunctioning due to the hook being detached by vibration or the like. Also, after the catch weight operation, the center of gravity of the hook moves to the side opposite to the support point of the catch weight with respect to the vertical line passing through the rotation center of the hook. For this reason, the hook can maintain the fallen posture, and the hook does not return to the posture of colliding with the pendulum again.

  Problems, configurations, and effects other than those described above will be apparent from the description of the embodiments below.

It is a side view which shows schematic structure of the elevator apparatus to which this apparatus is applied. It is a front view of a governor in an elevator apparatus to which the present invention is applied. It is the schematic which shows the behavior of a hook about the elevator apparatus which applies this invention. It is a figure explaining the arrangement | positioning range of the gravity center position of a hook about the elevator apparatus to which this invention is applied. It is a figure which shows a comparative example with this invention, and is the schematic which shows the behavior of the hook in case the gravity center position of a hook exists in the supporting point side of a catch weight with respect to the vertical line which passes along the rotation center of a hook. It is a figure which shows a comparative example with this invention, and is the schematic which shows the behavior of the hook in case the gravity center position of a hook exists in the anti support point side of a catch weight with respect to the vertical line which passes along the rotation center of a hook.

  Hereinafter, an embodiment of an elevator apparatus according to the present invention will be described based on FIGS. 1 to 4.

  First, a schematic configuration of an elevator apparatus to which the present invention is applied will be described based on FIG. FIG. 1 is a side view showing a schematic configuration of an elevator apparatus to which the present apparatus is applied.

  In general, the elevator apparatus comprises an elevator 300, a main rope 500, a traction sheave 600, a guide rail 700, an emergency stop device 800, an actuating lever 900, a drive device 1100, a braking device 1200, a speed regulating rope 1 and a sheave 2 ing.

  The elevating body 300 is a car that moves up and down in the hoistway 200 provided in the building 1000. The main rope 500 suspends the car 300 at one end and the counterweight 400 at the other end. The main rope 500 is wound around a traction sheave 600 provided in the machine room 100. The traction sheave 600 is driven by a drive device 1100. The driving device 1100 is constituted by an electric motor, and includes a braking device 1200 that controls the driving of the motor. In the hoistway 200, a guide rail 700 for guiding the raising and lowering of the car 300 is provided in the vertical direction (vertical direction). The emergency stop device 800 is provided in the car 300, and grips the guide rail 700 by an anchor in an emergency to stop the elevator 300 in an emergency. The actuating lever 900 is a lever for driving the safety gear 800, and one end thereof is pivotally supported on the side of the car 300, and the other end is connected to the speed control rope 1. The speed control rope 1 is endlessly stretched over the entire area of the elevator car 200 in the hoistway 200. For this purpose, the speed control rope 1 is wound between a sheave 2a and a tension pulley 2b.

  In the present embodiment, the sheave 2a, the traction sheave 600, the drive device 1100 and the braking device 1200 are disposed in a machine room 100 provided at the upper part of the hoistway 200. However, the arrangement of the machine room 100 is not limited to the upper part of the hoistway 200, and the arrangement of the sheave 2a, the traction sheave 600, the drive device 1100 and the braking device 1200 is not limited to the machine room 100.

  Next, the governor in the elevator apparatus of the present embodiment will be described based on FIG. FIG. 2 is a front view of a governor in an elevator apparatus to which the present invention is applied. In addition, in FIG. 2, in order to show the shape of each component (part), the part which is hidden behind other components and is not shown is also shown with the continuous line.

  As shown in FIG. 2, the speed governor 10 in the present embodiment is configured by a speed control rope 1, a sheave 2 a, a pendulum 3, a hook 4 and a catch weight 6. Although not illustrated in FIG. 2, the tension pulley 2 b illustrated in FIG. 1 is also a component of the speed governor 10.

  In the speed governor 10, a sheave 2a around which an endless speed governor rope 1 is wound is supported by a speed governor frame 11, and a pendulum 3 (3a, 3b) rotates integrally with the sheave 2a. ) To control the speed of the car 300. Since the pendulum 3 rotates in synchronization with the sheave 2a, the higher the speed of the car 300, the faster the rotational speed. The pendulum 3 receives a centrifugal force according to the rotational speed, and receives a force that expands outward in the radial direction of the sheave 2a. As a result, the pendulum 3 opens toward the outer periphery of the sheave 2a. In addition, the code | symbol 2aa is a rotating shaft of the sheave 2a. The rotation shaft 2 aa of the sheave 2 a is provided on the governor frame 11.

  The pendulums 3a and 3b are configured to be able to swing around pivots 3aa and 3ba. Further, the pendulums 3a and 3b are provided with claws (protrusions) 3ab and 3bb that project outward in the radial direction of the sheave 2a at one end 3ac or 3bc. When the pendulums 3a and 3b open toward the outer periphery of the sheave 2a, the ends 3ac and 3bc on which the claws 3ab and 3bb are provided open outward, centering around the pivots 3aa and 3ba The side ends 3ad, 3bd enter radially inward. Further, two pendulums 3 a and 3 b are provided, and the two pendulums 3 a and 3 b are connected by a connecting member 12. At this time, one pendulum 3a is connected to the connection member 12 at the end 3ad side with respect to the rotation shaft 3aa, and the other pendulum 3b is connected to the connection member 12 at the end 3bc side with respect to the rotation shaft 3ba. .

  The speed governor 10 is provided with a biasing member 13 and is fixed to the mounting base 14 together with the pivot shafts 3aa and 3ba of the pendulums 3a and 3b. The biasing member 13 biases one pendulum 3b in the closing direction. That is, the biasing member 13 applies resistance to an operation in which the pendulum 3 b receives centrifugal force due to rotation and tries to open radially outward of the sheave 2 a.

  The connecting member 12 transmits the biasing force that one pendulum 3b receives from the biasing member 13 to the other pendulum 3a. As a result, the two pendulums 3a and 3b receive resistance from the biasing member 213 with respect to an operation of receiving centrifugal force due to rotation and trying to open radially outward of the sheave 2a.

  When the sheave 2a is at rest, the biasing member 13 biases the pendulums 3a and 3b in the closing direction to position the claws 3ab and 3bb of the pendulums 3a and 3b inward in the radial direction of the sheave 2a. When the sheave 2a is rotated by raising and lowering the car 300, the pendulums 3a and 3b are subjected to centrifugal force, and the speed of the car 300 exceeds the rated speed and ends when the centrifugal force exceeds the resistance of the biasing member 13. The parts 3ac and 3bc start to open radially outward of the sheave 2a. Furthermore, when the elevator speed of the car 300 exceeds the rated speed and reaches the first overspeed (usually 1.3 times the rated speed), the claws 3ab provided on the ends 3ac, 3bc of the pendulums 3a, 3b. 3bb operates a switch (not shown) (in this case, opens the contacts) to shut off the power supply of the motor 1100 for driving the car 300 and the power supply of the control device 1200 for controlling the motor 1100. In addition, the mechanism which this switch and pendulum 3a, 3b operate this switch is described in patent document 1, and a structure can be used.

  Also, the speed governor 10 ends the pendulums 3a and 3b when the descending speed of the car 300 exceeds the first overspeed and reaches the second overspeed (usually 1.4 times the rated speed) for some reason. The portions 3ac, 3bc are further opened radially outward, and the claws 3ab, 3bb of the pendulums 3a, 3b contact the end (upper end) of the hook 4. Hereinafter, the second overspeed is referred to as the emergency stop speed of the car 300.

  The hook 4 has two links 4 a and 4 b extending in two different directions from the portion of the rotation shaft 5, and has a shape bent at the shaft portion of the rotation shaft 5. A claw portion (engagement portion) 4ba is provided at a tip end portion of the link (first link) 4b (an end portion on the opposite side to the rotation shaft 5 side). The tip of the link (second link) 4a (the end opposite to the side of the pivot shaft 5) abuts on the expanded pendulum 3a, 3b. The hook 4 is assembled to the governor frame 11 in a state in which the two links 4 a and 4 b can swing around the rotation shaft 5. The pivot shaft 5 is provided on the governor frame 11.

  The catch weight 6 is provided with a rotating shaft 6b at one end, and is assembled to the governor frame 11 in a state where it can be pivoted about the rotating shaft 6b. A pin 6a is provided at the other end of the catch weight 6, and the hook 4ba of the hook 4 is engaged with the pin 6a. The pin 6a of the catch weight 6 constitutes an engagement portion with which the hook 4ba of the hook 4 is engaged.

  The engagement portion constituted by the claw portion 4 ba of the hook 4 and the pin 6 a of the catch weight 6 constitutes a support point (support portion) at which the hook 4 supports the catch weight 6.

  When the elevator apparatus is operated as usual, the hook 4 is at a position where the tip of one link 4a is higher than the tip of the pivot shaft 5 and the other link 4b, and the rotation shaft of the sheave 2a It is placed near 2aa. In this state, the claw portion 4ba of the link 4b of the hook 4 is engaged with the pin 6a of the catch weight.

  As described above, when the ends 3ac and 3bc of the pendulums 3a and 3b open radially outward, and the claws 3ab and 3bb of the pendulums 3a and 3b collide with the end (upper end) of the hook 4, the hook 4 It turns in the direction of arrow 4e. Then, the engagement between the hook 4a of the hook 4 and the pin 6a of the catch weight 6 is released. The catch weight 6 disengaged from the hook 4 b of the hook 4 rotates the rotation shaft 6 b by its weight, and the end side provided with the pin 6 a falls. As a result, the governor rope 1 is engaged between the abutment plate 11 a attached to the governor frame 11 and the governor rope 1 is gripped. As a result, the safety device 800 provided in the car 300 operates to mechanically emergency stop the car 300.

  In FIG. 2, the governor frame 11 is located closest to the front in the direction perpendicular to the paper surface. The mounting pedestal 14 is disposed on the back side of the speed governor frame 11, and the connecting member 12 is disposed further on the back side. The pendulum 3 is disposed on the back side of the connecting member 12, and the hook 4 is disposed on substantially the same plane as the connecting member 12. The sheave 2a is disposed further to the back of the pendulum 3, and on the far side of the sheave 2a, a governor frame on the opposite side of the governor frame 11 is disposed. The rotating shaft 2aa is pivotally supported by the governor frame 11 disposed in the front and the governor frame disposed in the rear.

  Next, a comparative example with the present invention will be described based on FIG. 5 and FIG.

  FIG. 5 is a view showing a comparative example with the present invention, and is a schematic view showing the behavior of the hook when the center of gravity of the hook is on the support point side of the catch weight with respect to the vertical line passing through the rotation center of the hook. is there.

  The barycentric position of the hook 4 in the present comparative example is indicated by reference numeral 7. In FIG. 5, the support point side of the catch weight 6 is engaged with the vertical line (vertical line segment) VL through the center 5 a of the rotation shaft 5 of the hook 4 (center of rotation of the hook 4) 5 a And the case where it exists at a position away from the vertical line VL.

  As shown in FIG. 5, when the elevator apparatus is in an overspeed state, the pendulums 3a and 3b open and the claws 3ab and 3bb of the pendulums 3a and 3b collide with the hook 4, the pendulum 3a and 3b collide with the hook 4 Is weak, the center of gravity 7 of the hook 4 may not move from the support point side of the catch weight to the opposite side (anti-support point side) with respect to the vertical line VL passing through the rotation center 5a of the hook. In this case, the hook 4 returns to the original posture, and the pendulums 3a and 3b and the hook 4 repeat unnecessary collisions.

  FIG. 6 is a view showing a comparative example with the present invention, and is a schematic view showing the behavior of the hook when the center of gravity of the hook is on the opposite side of the catch weight with respect to the vertical line passing through the rotation center of the hook. It is.

  The barycentric position of the hook 4 in the present comparative example is indicated by reference numeral 7. FIG. 6 shows the case where the center of gravity 7 of the hook 4 is located on the side opposite to the support point of the catch weight 6 with respect to the vertical line VL passing through the center (rotation center of the hook 4) 5a of the rotation axis 5 of the hook 4. . That is, the center of gravity 7 of the hook 4 is on the opposite side of the support point side (engagement side) of the catch weight 6 with respect to the vertical line VL passing through the rotation center 5 a of the hook 4.

  In this comparative example, at the same time the hook 4 supports the catch weight 6, the hook 4 is supported by the load received from the catch weight 6. The hook 4 may be subject to some vibration or shock such as an earthquake. In this case, when the center of gravity 7 of the hook 4 is located on the side opposite to the support point of the catch weight with respect to the vertical line VL passing through the rotation center of the hook 4, the hook acts by gravity due to the force of the catch weight 6 supporting the hook 4 The force with which the hook 4 tries to rotate in the direction in which the claws 4 ba of 4 are disengaged from the pins 6 a of the catch weights 6 tends to be larger. In this case, the hook 4 rotates in the direction in which the claw 4 ba is disengaged from the pin 6 a of the catch weight 6, and the catch weight 6 may fall off the hook 4. Then, the catch weight 6 grips the speed adjustment rope 1 with the backing plate 11a, and the safety gear 800 malfunctions.

  The rope gripping mechanism of the present embodiment will be described based on FIGS. 3 and 4.

  FIG. 3 is a schematic view showing the behavior of hooks in an elevator apparatus to which the present invention is applied.

  In this embodiment, an example in which the center of gravity 7 of the hook 4 is adjusted by weight is shown. However, it is also possible to adjust the position of the center of gravity by enlarging or reducing the part length, part width or part thickness of part of the hook 4.

  In FIG. 3, by attaching the center of gravity adjustment weight 8 to the hook 4, the position of the center of gravity 7 of the hook 4 is the support line side of the catch weight 6 and the vertical line VL with respect to the vertical line VL passing through the rotation center 5 a of the hook 4. It is adjusted to the upper part. Specifically, from the vertical line VL, the position of the center of gravity 7 is opposite to the rotation direction (first rotation direction) when the hook 4 releases the support of the catch weight 6 from the rotation center 5a. In the second rotation direction), and is disposed inside the angular range rotated by the size of the angle θ3. In this case, when the pendulum 3 collides with the hook 4, if the hook 4 is slightly rotated, the center of gravity 7 of the hook 4 can be moved to the opposite side (anti-supporting point side) with respect to the vertical line VL. The hook 4 whose center of gravity 7 has moved to the side opposite to the support point maintains a posture in which it falls to the side opposite to the support point. For this reason, it is possible to prevent the hook 4 from returning to its original posture and prevent the pendulum 3 and the hook 4 from repeated unnecessary collisions.

  When the hook 4 supports the catch weight 6, the center of gravity 7 of the hook 4 is positioned on the support point side (engagement side) of the catch weight 6 with respect to the vertical line VL. As a result, the center of gravity 7 is located at a position where the hook 4 can maintain the attitude to support the catch weight 6, so that the hook 4 is not easily detached from the catch weight 6 even if it receives vibration or impact. That is, it is possible to prevent an inadvertent release of the locked state between the hook 4 and the catch weight 6.

  Further, by this center-of-gravity position adjustment, the position of the center of gravity 7 moves from the support point side of the catch weight 6 to the opposite side with respect to the vertical line VL only by slightly rotating the hook 4. Therefore, the moving distance of the hook 4 for the catch weight operation can be reduced. For this reason, the freedom degree of parts arrangement of the governor 10 can be raised.

  Further, in the present embodiment, as shown in FIG. 2, a restricting portion 15 which restricts the hook 4 from rotating to the side opposite to the support point is provided. The regulating unit 15 is provided on the governor frame 11. Thereby, the rotation of the hook 4 can be restricted, and the space for the rotation of the hook 4 can be reduced. Therefore, the space under the hook 4 or the sheave 2a can be used effectively.

  FIG. 4 is a view for explaining an arrangement range of barycentric positions of hooks in the elevator apparatus to which the present invention is applied.

  In the present embodiment, in a state where the hook 4 supports the catch weight 6, the position of the center of gravity 7 of the hook 4 is disposed on the support point side of the catch weight 6 with respect to the vertical line VL. When releasing the support of 6, the position of the center of gravity 7 of the hook 4 is reliably moved from the support point side to the anti-support point side with respect to the vertical line VL. For this purpose, the position of the center of gravity 7 of the hook 4 is disposed inside a predetermined angle range set from the vertical line VL with the rotation center 5 a of the hook 4 as a center.

  In this case, the predetermined angle range is set from the vertical line VL in the direction (second rotation direction) opposite to the rotation direction (first rotation direction) when the hook 4 releases the support of the catch weight 6. Ru. That is, in FIG. 4, a portion of the vertical line VL on the upper side from the rotation center 5 a of the hook 4 (hereinafter referred to as the upper portion) is a predetermined angle toward the support point side of the catch weight 6 around the rotation center 5 a When it is rotated by the range, an angle range formed between upper portions of the two vertical lines VL before and after the rotation becomes a predetermined angle range.

  When the hook 4 rotates in a direction to release the support of the catch weight 6 from the posture to support the catch weight 6, the hook 4 has a rotation angle range θ3 capable of coming into contact with the pendulum 3 opened at the emergency stop speed. . Therefore, the size of the above-described predetermined angle range is set to the size of the rotation angle range θ3. That is, the center of gravity 7 of the hook 4 is a vertical line while rotating the rotation angle range θ3 that can contact the pendulum 3 expanded at the emergency stop speed of the elevator 300 from the state where the hook 4 supports the catch weight 6 In order to complete the movement from the support point side of the catch weight 6 to the anti-support point side beyond VL, the size of the angle θ3 in the second rotation direction from the vertical line VL to the center of rotation 5a Inside the angular range rotated by

  Accordingly, the hook 4 is reliably rotated by the pendulum 3 until the center of gravity 7 moves from the support point side to the anti-support point side with respect to the vertical line VL.

  Furthermore, in order to move the center of gravity 7 of the hook 4 promptly, the size of the above-mentioned predetermined angle range may be set to θ1 and θ2 described below. The angles θ1 and θ2 are smaller than θ3. That is, the size of the angle range set to the angles θ1 and θ2 is narrower than the size of the angle range set to the angle θ3.

  The angle θ1 is set based on the engagement range of the claw 4 ba of the hook 4 and the pin 6 a of the catch weight 6. The engagement range is a range in which the claw 4 ba of the hook 4 and the pin 6 a of the catch weight 6 can be engaged with each other, and is an angle range in which the claw 4 ba can contact with the pin 6 a. The engagement in this case does not mean that the catch weight 6 is locked in the supporting position by the hook 4 ba of the hook 4. However, a part of this engagement range includes the locking range (locking angle range) in which the catch weights 6 are locked in the supporting position by the claws 4 ba of the hook 4, and this locking range is included in the engagement range Be

  The hook 4 is provided with a claw 4 ba at the tip of the link 4 b, and the catch weight 6 is supported by the hook 4 by engaging the claw 4 ba with the pin 6 a of the catch weight 6. In a state in which the claw 4ba is most deeply engaged with the pin 6a, the side edge of the link 4b of the hook 4 is in contact with the outer peripheral surface of the pin 6a at the position 4d. In this state, a line segment L1 connecting the rotation center (rotation center of the hook 4) 5a of the rotation shaft 5 and the position 4d is assumed. Furthermore, in this state, a line segment L2 connecting the rotation center 5a of the rotation shaft 5 and the tip 4c of the claw 4ba is assumed. At this time, an angle formed between the two line segments L1 and L2 is θ1.

  The above-mentioned predetermined angle range is set to the size of the angle range (engagement angle range) θ1 in which the engagement portion (claw 4ba) of the hook 4 can be engaged with the engagement portion (pin 6a) of the catch weight 6 . Then, the center of gravity 7 is disposed within the angle range defined by the angle range of θ1 on the support point side (second rotation direction side) of the catch weight 6 from the vertical line VL. As a result, after the engagement between the claw 4 ba and the pin 6 a is released, the center of gravity 7 of the hook 4 rapidly moves over the vertical line VL to the side opposite to the support point of the catch weight 6.

  When the pin 6a has a cylindrical shape, the locked state of the catch weight 6 by the claw 4ba of the hook 4 is released before the hook 4 rotates the angle of θ1. That is, when the tip 4c of the hook 4ba of the hook 4 reaches the intersection point 6ab of the horizontal line HL passing through the center 6aa of the pin 6a and the outer peripheral surface of the pin 6a, the hook 4 can not lock the catch weight 6 It will be in the state. The rotation angle of the hook 4 at this time is set to θ2 (<θ1).

  An angle range between the vertical line VL and the angle θ2 on the support point side of the catch weight 6 with respect to the vertical line VL and centering on the rotation center 5 a of the rotation shaft 5 It is a locking angle range that is locked to the support position by 4ba.

  The above-mentioned predetermined angle range is set to the size of the locking angle range θ2, and the center of gravity 7 of the hook 4 is disposed inside this predetermined angle range. As a result, after the locked state of the pin 6a by the claw 4ba is released, the center of gravity 7 of the hook 4 rapidly moves over the vertical line VL to the side opposite to the support point of the catch weight 6. In this case, the center of gravity 7 of the hook 4 moves to the side opposite to the support point of the catch weight 6 more quickly than arranging the center of gravity 7 of the hook 4 outside the angle range θ2 from the vertical line VL and inside the angle range θ1. can do.

  In this embodiment, the center of gravity 7 of the hook 4 is disposed inside a predetermined angle range defined by the size of the engagement angle range or the locking angle range described above. As a result, when mechanically stopping the car 300 mechanically, the center of gravity 7 of the hook 4 can be quickly moved to the side opposite to the support point of the catch weight 6 with respect to the vertical line VL.

  According to the embodiment of the present invention, the hook 4 can maintain its fallen posture, and the hook 4 will not return to the posture of colliding with the pendulum 3 again. As a result, it is possible to reduce the risk that the hook 4 and the pendulum 3 will collide and damage the part. Also, the hook 4 can maintain its posture before and after movement at a small rotation angle. For this reason, the freedom degree of parts arrangement of the governor 10 can be raised and the dimension of the governor 10 can be miniaturized.

  The present invention is not limited to the above-described embodiments, but includes various modifications. For example, the embodiments described above are described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations. Also, part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. In addition, with respect to a part of the configuration of each embodiment, it is possible to add, delete, and replace other configurations.

  DESCRIPTION OF SYMBOLS 1 ... Rope for speed control, 2 ... sheave, 3 ... pendulum, 4 ... hook, 4a ... 2nd link of hook 4, 4b ... 1st link of hook 4, 4ba ... nail, 5 ... rotating shaft (hook 5) Rotation center of hook 4 6 Catch weight 7 7 Center of gravity (hook) 8 Center of gravity adjustment weight 10 Speed control 100 100 Machine room 200 Lift path 300 Lifting body 400 ... Balance weight, 500 ... Main rope, 600 ... Traction sheave, 700 ... Guide rail, 800 ... Safety device, 900 ... Actuation lever, 1000 ... Architecture

Claims (5)

A speed control rope connected to the elevating body,
A sheave on which the regulating rope is wound;
A pendulum that spreads radially outward of the sheave by centrifugal force according to the rotational speed of the sheave;
A catch weight for gripping the governor rope;
It is configured to be rotatable around an axis of rotation, supports the catch weight by engaging with the catch weight, and releases support of the catch weight by rotating in a first rotational direction around the axis of rotation Have hooks to
The elevator apparatus according to claim 1, wherein the pendulum spreads radially outward of the sheave to contact the hook at an emergency stop speed of the elevator to release the catch weight from the hook and to release the catch weight. ,
The center of gravity of the hook is
When the hook supports the catch weight, the hook is located on the support point side of the catch weight by the hook with respect to a vertical line passing through the rotation center of the hook.
The hook is arranged to move beyond the vertical line to the side opposite to the support point while rotating the hook in a rotational angle range that can contact the pendulum expanded at the emergency stop speed. An elevator device characterized by In claim 1,
The hook and the catch weight are engaged with each other, and the hook includes an engagement portion for supporting the catch weight, respectively.
The center of gravity is disposed within a predetermined angle range set from the vertical line to a second rotation direction opposite to the first rotation direction,
The elevator apparatus is characterized in that the size of the predetermined angle range is a size of a rotation angle range of the hook such that the engagement portion of the hook can engage with the engagement portion of the catch weight. . In claim 2,
The hook includes a claw as the engagement portion.
The catch weight includes a pin as the engagement portion.
The size of the predetermined angle range is a rotation angle range of the hook in which the hook and the pin can contact when the hook supports the catch weight in the first rotation direction. An elevator apparatus characterized by having a size of In claim 3,
The hook extends from a portion of the rotation shaft and has a first link provided with the claw at a tip end, and extends from a portion of the rotation shaft in a direction different from the first link and has a tip end And a second link abutting on the expanded pendulum,
When the hook supports the catch weight, a side edge portion of the first link in a direction perpendicular to the extending direction can contact the pin.
The size of the predetermined angle range is a first line segment connecting a contact point where the side edge of the first link and the pin make contact with each other and the rotation center of the hook, the tip of the claw, and the rotation An elevator apparatus characterized in that it has a size of an angle range formed between a second line segment connecting with the rotation center of the shaft. In claim 4,
The said hook is a elevator apparatus characterized by the position of the said gravity center being adjusted inside the said predetermined angle range in the state which attached the additional component.

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